Messages in this thread | | | Subject | Re: [PATCH] arm64: kconfig: allow support for memory failure handling | From | "Baicar, Tyler" <> | Date | Fri, 24 Mar 2017 10:36:16 -0600 |
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On 3/23/2017 10:12 AM, Punit Agrawal wrote: > > > On 23/03/17 14:33, James Morse wrote: >> Hi Punit, >> >> On 01/02/17 21:38, Tyler Baicar wrote: >>> From: "Jonathan (Zhixiong) Zhang" <zjzhang@codeaurora.org> >>> >>> If ACPI_APEI and MEMORY_FAILURE is configured, select >>> ACPI_APEI_MEMORY_FAILURE. This enables memory failure recovery >>> when such memory failure is reported through ACPI APEI. APEI >>> (ACPI Platform Error Interfaces) provides a means for the >>> platform to convey error information to the kernel. >>> >>> Declare ARCH_SUPPORTS_MEMORY_FAILURE, as arm64 does support >>> memory failure recovery attempt. >> >> Am I right in thinking we should wait for the hugepage issue you >> found with >> hwpoison [0] to be fixed before arm64 can have >> ARCH_SUPPORTS_MEMORY_FAILURE? > > We should at the least fix the huge_pte_offset() issue discovered in [0] > before we enable memory failure handling. Earlier today I posted a > RFC[1] fix for it based on Catalin's suggestion. > >> >> (If so, can this patch become part of that series to they are >> obviously related!) > > Good point - I can include the patches enabling memory failure handling > on ARM64 if Tyler's fine with it. That's fine with me!
Thanks, Tyler > > Thanks, > Punit > > [1] https://lkml.org/lkml/2017/3/23/293 > >> >> Thanks, >> >> James >> >> [0] https://www.spinics.net/lists/arm-kernel/msg568995.html >> >> >> >> >>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig >>> index f92778d..4cd12a0 100644 >>> --- a/arch/arm64/Kconfig >>> +++ b/arch/arm64/Kconfig >>> @@ -15,6 +15,8 @@ config ARM64 >>> select ARCH_HAS_SG_CHAIN >>> select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST >>> select ARCH_USE_CMPXCHG_LOCKREF >>> + select ACPI_APEI_MEMORY_FAILURE if ACPI_APEI && MEMORY_FAILURE >>> + select ARCH_SUPPORTS_MEMORY_FAILURE >>> select ARCH_SUPPORTS_ATOMIC_RMW >>> select ARCH_SUPPORTS_NUMA_BALANCING >>> select ARCH_WANT_COMPAT_IPC_PARSE_VERSION >>> >> >> >> > IMPORTANT NOTICE: The contents of this email and any attachments are > confidential and may also be privileged. If you are not the intended > recipient, please notify the sender immediately and do not disclose > the contents to any other person, use it for any purpose, or store or > copy the information in any medium. Thank you.
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